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1   /*
2    *    Copyright 2009-2023 the original author or authors.
3    *
4    *    Licensed under the Apache License, Version 2.0 (the "License");
5    *    you may not use this file except in compliance with the License.
6    *    You may obtain a copy of the License at
7    *
8    *       https://www.apache.org/licenses/LICENSE-2.0
9    *
10   *    Unless required by applicable law or agreed to in writing, software
11   *    distributed under the License is distributed on an "AS IS" BASIS,
12   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *    See the License for the specific language governing permissions and
14   *    limitations under the License.
15   */
16  package org.apache.ibatis.submitted.call_setters_on_nulls;
17  
18  import java.io.Reader;
19  import java.util.List;
20  import java.util.Map;
21  
22  import org.apache.ibatis.BaseDataTest;
23  import org.apache.ibatis.io.Resources;
24  import org.apache.ibatis.session.SqlSession;
25  import org.apache.ibatis.session.SqlSessionFactory;
26  import org.apache.ibatis.session.SqlSessionFactoryBuilder;
27  import org.junit.jupiter.api.Assertions;
28  import org.junit.jupiter.api.BeforeAll;
29  import org.junit.jupiter.api.Test;
30  
31  class CallSettersOnNullsTest {
32  
33    private static SqlSessionFactory sqlSessionFactory;
34  
35    @BeforeAll
36    static void setUp() throws Exception {
37      // create a SqlSessionFactory
38      try (Reader reader = Resources
39          .getResourceAsReader("org/apache/ibatis/submitted/call_setters_on_nulls/mybatis-config.xml")) {
40        sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
41      }
42  
43      // populate in-memory database
44      BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
45          "org/apache/ibatis/submitted/call_setters_on_nulls/CreateDB.sql");
46    }
47  
48    @Test
49    void shouldCallNullOnMappedProperty() {
50      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
51        Mapper mapper = sqlSession.getMapper(Mapper.class);
52        User user = mapper.getUserMapped(1);
53        Assertions.assertTrue(user.nullReceived);
54      }
55    }
56  
57    @Test
58    void shouldCallNullOnAutomaticMapping() {
59      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
60        Mapper mapper = sqlSession.getMapper(Mapper.class);
61        User user = mapper.getUserUnmapped(1);
62        Assertions.assertTrue(user.nullReceived);
63      }
64    }
65  
66    @Test
67    void shouldCallNullOnMap() {
68      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
69        Mapper mapper = sqlSession.getMapper(Mapper.class);
70        Map user = mapper.getUserInMap(1);
71        Assertions.assertTrue(user.containsKey("NAME"));
72      }
73    }
74  
75    @Test
76    void shouldCallNullOnMapForSingleColumn() {
77      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
78        Mapper mapper = sqlSession.getMapper(Mapper.class);
79        List<Map<String, Object>> oneColumns = mapper.getNameOnly();
80        // When callSetterOnNull is true, setters are called with null values
81        // but if all the values for an object are null
82        // the object itself should be null (same as default behaviour)
83        Assertions.assertNull(oneColumns.get(1));
84      }
85    }
86  
87    @Test
88    void shouldCallNullOnMapForSingleColumnWithResultMap() {
89      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
90        Mapper mapper = sqlSession.getMapper(Mapper.class);
91        List<Map<String, Object>> oneColumns = mapper.getNameOnlyMapped();
92        // Assertions.assertNotNull(oneColumns.get(1));
93        // TEST changed after fix for #307
94        // When callSetterOnNull is true, setters are called with null values
95        // but if all the values for an object are null
96        // the object itself should be null (same as default behaviour)
97        Assertions.assertNull(oneColumns.get(1));
98      }
99    }
100 
101 }